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Global dose distributions of neutrons and gamma-rays on the Moon
https://repo.qst.go.jp/records/2000752
https://repo.qst.go.jp/records/2000752bb683d59-5b08-44e6-98b6-1380a6e5f221
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2024-12-11 | |||||||||||
| タイトル | ||||||||||||
| タイトル | Global dose distributions of neutrons and gamma-rays on the Moon | |||||||||||
| 言語 | en | |||||||||||
| 言語 | ||||||||||||
| 言語 | eng | |||||||||||
| 資源タイプ | ||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||
| 資源タイプ | journal article | |||||||||||
| 著者 |
Naito Masayuki
× Naito Masayuki
× Kusano Hiroki
× Kodaira Satoshi
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| 抄録 | ||||||||||||
| 内容記述タイプ | Abstract | |||||||||||
| 内容記述 | Dose assessment on the lunar surface is important for future long-term crewed activity. In addition to the major radiation of energetic charged particles from galactic cosmic rays (GCRs), neutrons and gamma-rays are generated by nuclear interactions of space radiation with the Moon’s surface materials, as well as natural radioactive nuclides. We obtained neutron and gamma-ray ambient dose distributions on the Moon using Geant4 Monte Carlo simulations combined with the Kaguya gamma-ray spectrometer measurement dataset from February 10 to May 28, 2009. The neutron and gamma-ray dose rates varied in the ranges of 58.7?71.5 mSv/year and 3.33?3.76 mSv/year, respectively, depending on the lunar geological features. The lunar neutron dose was high in the basalt-rich mare, where the iron- and titanium-rich regions are present, due to their large average atomic mass. As expected, the lunar gamma-ray dose map was similar to the distribution of natural radioactive elements (238U, 232Th, and 40K), although the GCR-induced secondary gamma-ray dose was significant at ~?3.4 mSv/year. The lunar secondary dose contribution resulted in an additional dose of 12?15% to the primary GCR particles. Global dose distributions on the lunar surface will help identify better locations for long-term stays and suggest radiation protection strategies for future crewed missions. | |||||||||||
| 書誌情報 |
Scientific Reports 巻 13, p. 13275, 発行日 2023-08 |
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| 出版者 | ||||||||||||
| 出版者 | Nature Research | |||||||||||
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| 収録物識別子タイプ | ISSN | |||||||||||
| 収録物識別子 | 2045-2322 | |||||||||||
| DOI | ||||||||||||
| 識別子タイプ | DOI | |||||||||||
| 関連識別子 | 10.1038/s41598-023-40405-0 | |||||||||||
